Duplicating-machine for making perforated music-sheets, &amp;c.



E. W. MYERS.

DUPLIGATING MACHINE FOR MAKING PERFORATED MUSIC SHEETS, dw.

APPLICATION FILED DEC.6,1910

1,091 ,439. Patented Mar. 24, 1914.

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E. W. MYERS.

DUPLIGATING MACHINE FOR. MAKING PEEPOEATED MUSIC SHEETS, 6w.

APPLICATION FILED DEC. 6, 1910.

1,091,439. Patented Mar. 24, 19m

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UNITED STATES PATENT OFFICE,

EDGAR W. MYERS, OF'SAN JOSE, CALIFORNIA, ASSIGNOR- TO EUTERPEAN DUPLICATOR COMPANY, OF SAN JOSE, CALIFORNIA.

DUPLICATING-MACHINE FOR MAKING PERFORATED MUSIC-SHEETS, 866.

Application filed December 6, 1910.

To all whom it may concern Be it known that I, EDGAR W. MYERs, a citizen of the United States, residing at San Jose, in the county of Santa Clara and State of California, have invented certain new and useful Improvements in Duplicating- Machines for Making Perforated Music- Sheets, &c., and do hereby declare that the following is a full clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

My invention relates to machines for producing perforated sheets for the automatic operation of mechanism, such for example. as piano players, and for other purposes. in which duplicating machines a perforated master sheet is employed, and the object I have had principally in view in making my present invention is to render unnecessary any particular thickness of stock for the master sheet, so that, if need be, very thin paper may be used for the master sheet, which is less expensive than the heavy paper that is indispensable with the machines heretofore used, due to the fact that the sides or edges of the holes in the paper engage the selector devices which determine where holes shall be punched in the duplicate or copy sheets.

For the attainment of this object of my invention, as well as other objects and ad vantages which will appear to those skilled in the art, my invention consists in the mechanism constructed substantially as hereinafter specified and claimed.

In the accompanying drawings-Figure l is a longitudinal section of a machine embodying my invention and Figs. 2 and 3 are similar views of only a fragmentary portion of the mechanism which, respectively, show the two positions of the selectors.

In the machine which I have selected to illustrate an embodiment of my invention, a gang or series of vertical reciprocating punches 10 is employed that are mounted in a frame bar 11, above a die plate 12, supported on a base bar 13 so that a space is left between the die plate and the punches when they are in a raised position for the passage between them of the copy sheet 14, which as usual is fed by a step by step motion from a roll or spool 15, the motion, of course, oc-

Specification of Letters Patent.

Patented Mar. 24, 1914. Serial No. 595,966.

curring between the intervals of movementof the punches. Each punch is moved to and yieldingly held in an elevated position by means of a spring 16 that bears against the underside of a head 17, and the downward movement of the punches is produced by a hammer or chuck in the form of a vertically disposed plate 18 carried by a frame 19 which is connected by a. pitman 20 with an eccentric 21 on a constantly revolving shaft 22. The downward movement of the chuck 18 is transmitted to selected punches through horizontally slidable blocks or keys 23 of which there is one for each punch which lie in the space between the head 17 and the chuck 18 in its raised position, and which by the action of selector devices to be described are movable to and from position for engagement by the chuck.

Each key has a spring device 24 which tends to move the key in position beneath the chuck for engagement thereby, and it is movable in the opposite direction by a selector lever 25 which is vertically arranged, and at its lower end engages a pin 26 on the key so as to be able to move the key in opposition to its spring device. The selector lever 25 is pivoted intermediate its ends on a pivot 26 and at its upper end carries an upwardly extending finger 27, preferably of spring wire, which is engaged by an eccentric 28 on a constantly revolving shaft 29 so that, as will be seen the selector lever 25 and its key, are vibrated or reciprocated. The action of the eccentric 28 is to retract the keys from beneath the chuck, and the master sheet 30 determines the extent of movement of the key under the action of its spring device to a position beneath the chuck where on the descent of the latter it will be engaged and the appropriate punch operated to perforate the copy sheet.

The master sheet 30 supported, as is usual, by a pair of rollers or spools 31, is carried over a supporting surface contiguous to the selector lever 25, which surfaces may conveniently be the periphery of a cylinder 32 which is mounted so as to be nonrotatable and in the periphery of the cylinder 32 toward the selector levers 25 there is a slot or recess 33 in alinement with a stud or pin 34 on each of the selector levers 25, across which slot or recess the master sheet or pattern passes that it will be seen, as the selector lever 25 is vibrated, if at the time its stud or pin 34 is moving toward the master sheet or pattern, a hole or perforation therein is over the recess 33, the selector lever pin 34 will pass through said hole and into such recess 33, and a movement of the key 23 takes place sufficient to place it beneath the chuck and thus causes the operation of the particular punch controlled by the key thus moved. If, however, on the movement of the selector lever 25 toward the master sheet or pat-tern an imperforate portion of the master sheet is over the recess 33, the movement of the selector lever 25 will be arrested by its contact with the master sheet before its key 23 is moved by the action of its spring device far enough to be beneath the chuck and hence, on the descent of the latter said key will not be engaged. It will be observed that the edges of the hole or perforations in the master sheet do not cooperate with the pins 34: of the selector levers 25 by forming bearing contact therewith, but the office of the holes in the master sheet is merely to enable the pins to pass into the recess 33 in the master sheet guide or support 32, and, therefore, exceedingly thin and consequently inexpensive paper can be used for making the master sheet or pattern.

To arrest the selector levers 25 in their movement away from the master sheet by the action of the eccentric 28, a stop 35 is preferably employed, this stop being a pro jection suitably supported in a stationary position.

It is to be understood that changes from the details of construction, shown and described herein, may be made which will involve no departure from the principle of my invention, and my claim is to be understood in the light of this statement.

Having thus described my invention what I claim is In a mechanism for producing duplicate perforated sheets, the combination of a series of punches, punch operating means, selector mechanism comprising a series of pivoted levers and a series of slidable blocks, the latter being movable by the levers into and out of operative relation with the punch op- T erat-ing means, a support for a master sheet having recesses over which the master sheet passes adapted to receive projections on said levers, a continuously operated shaft provided with a series of eccentrics adapted to constantly vibrate said levers, and spring means tending at all times to press the levers and the blocks into operative position.

In testimony whereof I aflix my signature in presence of two witnesses.

EDGAR IV. MYERS. Vitnesses JOHN D. CRUMMEY, D. P. SIMoNs.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. O. 

